metamorphic

White quartzite pebble

Quartzite, composed predominantly of quartz (SiO₂)

AI-generated identification · may be incorrect

White to cream, opaque, with a sugary granular texture and vitreous-to-dull luster; quartz hardness is 7 Mohs, with no cleavage and uneven fracture. The rounded shape and smooth surface suggest natural water abrasion or tumbling.

Identified October 4, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed when quartz-rich sandstone was recrystallized under heat and pressure, welding quartz grains together. Its age and original source cannot be determined from the image.

Uses & applications

Commonly used as decorative stone, landscaping aggregate, paving, and building stone; this small pebble is mainly suitable for collecting or display.

Geological facts

Quartzite resists scratching and weathering; a true quartzite’s grains are tightly interlocked rather than easily scraped apart.

Field identification & locations

Likely a water-worn quartzite pebble; look for a hard, granular surface and test whether a steel knife fails to scratch it. Quartzite occurs worldwide in metamorphic terrains and river or beach gravels.